MDCAT Physics MCQ #191

A transformer in an AC circuit is used to decrease the voltage and reduce the current. What is the physical principle behind this transformation?

MDCAT Physics MCQ #191

  1. Question 1

    Q1. A transformer in an AC circuit is used to decrease the voltage and reduce the current. What is the physical principle behind this transformation?

    • A) The transformer uses electromagnetic induction to increase the voltage and reduce the current
    • B) The transformer uses impedance matching to decrease the voltage and reduce the current
    • C) The transformer uses electromagnetic induction to transfer energy between coils
    • D) The transformer uses the principle of conservation of energy to decrease the voltage and reduce the current

    Answer: The transformer uses electromagnetic induction to transfer energy between coils

    Explanation: The transformer uses electromagnetic induction to transfer energy between coils, not conservation of energy, impedance matching, or just electromagnetic induction.